Delta sigma modulator with unavailable output values
First Claim
1. An apparatus comprising:
- a delta sigma modulator having two ranges of available output values and a range of one or more unavailable intermediate output values, wherein the range of one or more unavailable intermediate output values represent a gap in available output values and represents output values that are unavailable for use in generating a duty cycle modulated control signal to control a switch of a switching power converter; and
a duty cycle modulator, coupled to the delta sigma modulator, to receive the available output values from the delta sigma modulator and to generate the duty cycle modulated control signal to control the switch of the switching power converter.
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Abstract
A power control system includes a delta sigma modulator to generate output values for use in controlling a switching power converter. In at least one embodiment, the delta sigma modulator includes two ranges of available output values and a range of one or more unavailable intermediate output values, wherein the range of one or more unavailable intermediate output values represent a gap in available output values. Each unavailable intermediate output value represents an output value that is not generated by the delta sigma modulator. In at least one embodiment, the delta sigma modulator includes a quantizer output remapping module that remaps quantizer output values within the range of one or more unavailable intermediate output values of the delta sigma modulator to new output values within one of the ranges of available output values.
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Citations
25 Claims
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1. An apparatus comprising:
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a delta sigma modulator having two ranges of available output values and a range of one or more unavailable intermediate output values, wherein the range of one or more unavailable intermediate output values represent a gap in available output values and represents output values that are unavailable for use in generating a duty cycle modulated control signal to control a switch of a switching power converter; and a duty cycle modulator, coupled to the delta sigma modulator, to receive the available output values from the delta sigma modulator and to generate the duty cycle modulated control signal to control the switch of the switching power converter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method comprising:
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generating output values with a delta sigma modulator, wherein (i) the output values of the delta sigma modulator include two ranges of available output values and a range of one or more unavailable intermediate output values and (ii) the range of one or more unavailable intermediate output values represents a gap in available output values and represents output values that are unavailable for use in generating a duty cycle modulated control signal to control a switch of a switching power converter; and generating the duty cycle modulated control signal to control the switch of the switching power converter using the available output values of the delta sigma modulator. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. An apparatus comprising:
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means for generating output values with a delta sigma modulator, wherein the output values of the delta sigma modulator include two ranges of available output values and a range of one or more unavailable intermediate output values, wherein the range of one or more unavailable intermediate output values represents a gap in available output values and represents output values that are unavailable for use in generating a duty cycle modulated control signal to control a switch of a switching power converter; and means for generating the duty cycle modulated control signal to control the switch of the switching power converter using the available output values of the delta sigma modulator.
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Specification